<template>
  <HomePanel title="人气推荐" sub-title="人气爆款 不容错过" ref="target">
    <ul ref="pannel" class="goods-list">
      <li v-for="item in goods" :key="item.id">
        <RouterLink to="/">
          <img :src="item.picture" alt="" />
          <p class="name">{{ item.title }}</p>
          <p class="desc">{{ item.alt }}</p>
        </RouterLink>
      </li>
    </ul>
  </HomePanel>
</template>
<script>
import { ref } from 'vue'
import HomePanel from './HomePanel.vue'
import { useIntersectionObserver } from '@vueuse/core'
import { findHot } from '@/api/home'
export default {
  name: 'HomeNew',
  components: { HomePanel },
  setup() {
    const goods = ref([])
    const target = ref(null)
    useIntersectionObserver(target, ([{ isIntersecting }], observerElement) => {
      // isIntersecting 是否进入可视区域，true是  false否
      // observerElement 被观察的dom元素
      if (isIntersecting) {
        stop()
        //  发ajax
        console.log(isIntersecting)
        findHot().then(item => {
          goods.value = item.result
        })
      }
    })
    return { goods, target }
  }
}
</script>
>
<style scoped lang="less">
.goods-list {
  display: flex;
  justify-content: space-between;
  height: 426px;
  li {
    width: 306px;
    height: 406px;
    .hoverShadow();
    img {
      width: 306px;
      height: 306px;
    }
    p {
      font-size: 22px;
      padding-top: 12px;
      text-align: center;
    }
    .desc {
      color: #999;
      font-size: 18px;
    }
  }
}
</style>
